Describe the bug

After we've updated to the latest 5.34.3 from 5.33.19 we are getting lots of the following errors.

Unfortunately we haven't been able to understand what is leading to this and the error stacks in our error collecting system are limited to the ones on the screenshot.

I know that reproduction would be much better than a screenshot, but hopefully knowing what changed between versions and having context about svelte internals could still help you guess what it could be connected to.

Reproduction

Have no idea even where to begin searching, our system is somewhat big. But will return back if some more useful info is found.

Logs

System Info

svelte: 5.34.3

Severity

annoyance